Lawn-mower.



J. EDMUNDS.

LAWN MOWER.

APPLICATION I'ILED DEC. 22, 1911.

Inventor J02 n [civil/0161a Mttorrifiy UNITED STATES PATENT OFFICE.

JOHN EDMUNDS, 0F SHAMOKIN, PENNSYLVANIA.

LAWN-MOWER.

Application filed December 22, 1911.

To all whom 272, may concern.

Be it known that I, JOHN Emruxns, a citizen of the United States,residing at Shamokin, in the county of Northumberland and State ofPennsylvania, have invented certain new and useful Improvements inLawn-Mowers, of which the following is a specification.

This invention relates to lawn-mowers and particularly to-that class oflawn-mowers having reciprocating cutters.

The chief object of the invention is to improve upon the manner offorming and mounting the reciprocating cutting mechanism, including themeans of transmitting motion to the cutter bar.

To this end the invention consists in the form, construction andcombination of parts substantially as hereinafter set forth and claimed.

In the accompanying drawings which form a part of this specificationFigure 1 is a front elevation of the improved mower; Fig. 2 is an endelevation thereof, the handle being broken away in both instances; andFig. 3 is a detail on an enlarged scale.

Referring to the drawings the ground wheels indicated at 5 are connectedto the driving shaft 6, and to this shaft, in the usual manner, isconnected the handle 7 of the mower. The frame work for supporting thecutting mechanism and the mechanism by which motion is conveyed from thedriving shaft to the cutting mechanism, may be variously constructed andmounted, but the 'form illustrated in the drawings is preferred, whereinthe chief elements of the said frame are the wheel guards 8 and 9 whicharch over the ground wheels and extend forward thereof in an obliquemanner near the ground. These wheel guards are mounted upon the drivingshaft by means of horizontal bars 10 through which said shaft passes andwhich at their ends are riveted or otherwise secured to the bandsforming the wheel guards. These wheel guards are also preferablyconnected at the rear of the wheels by a bar 11 which forms a supportfor the handle in its lowermost position as well as forming a connectionbetween said guards. A rest, as 12, may also connect the lower rear endsof the wheel guards.

The finger bar 13 is connected to the forward ends of the extensions ofthe wheel guards. Upon the finger bar 13 is mounted the cutter bar 14 ina manner to provide for Specification of Letters Patent.

Patented May 14, 1912.

Serial No. 667,380.

its reciprocation. Such mounting is preferably ellccted by notching theends of the cutter bar to receive studs, as 15, upon the upper ends ofwhich suitable anti-friction washers may be placed and above these nutsfor holding the cutter bar to the finger bar. It may be noted that thefingers and the sections of the cutter bar are longer than usual therebyproviding for more rapid and smoother cutting. Suitable oil holes, asindicated at 16, may be provided through the cutter bar to lubricate themeeting faces of the finger bar and cutter bar.

For the reciprocation of the cutter bar, a bevel gear, as 17, is fixedupon the driving shaft (3. Upon the wheel guard 8 is mounted aprojection 18 in which is journaled a counter-sliaft bearing at one enda bevelpinion 19 for engagement with the bevel gear 17 and upon theother end of which is mounted a crank, or, as shown'in the drawings, adisk 20 bearing a wrist pin for the attachment of a pitman 21 whichdrives the reciprocating mechanism. Upon the forward extensions of thewheel guards there are mounted supports, as 22 and 23, in the upper endsof which are pivoted levers 24. and 25. These levers are connected attheir lower ends to the cutter bar and are joined at their upper ends bythe link 26. To this link the pitman 21 is connected by a studpivot 27.

The connection of the lower ends of the levers 24 and 25 to the cutterbar may be effected in any suitable manner so long as provision is madefor the variation in leverage due to the swinging of said lovers in thereciprocation of the cutter bar. For this purpose studs, as 28, may bepivoted in suitable lugs on the rear edge of the cutter bar. In additionto this the lower ends of the levers 24 and 25 may be provided withtelescoping joints 29, as illustrated in detailin Fig. 3. Obviously,either of these means for providing for varying leverage may be usedalone. The wooden roller 30 for supporting the cutting mechanism has itsjournal bearings mounted in slots 31 formed in the oblique portions ofthe wheel guards. Screw-threaded projections on the journal bearings ofthe roller extend through said slots and have thereon thumb nuts 32 andby means of these the roller may be shifted up or down the obliqueportions of the wheel guards and so regulate the distance of the cuttingmechanism from the ground.

Suitable antifriction collars and washers may be mounted upon studs 33fixed in the finger bar at the rear edge of the cutter bar.

The invention claimed is 1. In a lawn-mower the combination with theground-wheels and driving shaft, of wheel guards arched over the groundwheels and supported on said shaft and having extensions in front ofsaid wheels, 21 finger bar connecting said extensions, a cutter barmounted for reciprocation upon the finger bar, a roller mounted at itsends for vertical adjustment upon said extensions, and a cutter-bardriving mechanism connected to said cutter bar and geared to saiddriving shaft.

2. In a lawn-mover, the combination with the ground-wheels and drivingshaft, of guards for said wheels, means connected to said guards andsupported on said shaft, said guards having extensions in front of saidwheels, a finger bar connecting said extensions, a cutter bar mountedfor reciprocation upon the finger bar, upright arms on said extensions,upright levers pivoted to said arms and at their lower ends pivoted tothe cutter bar, a link connecting the upper ends of said levers, and apitman connected to said link and geared to said driving shaft.

3. In a lawn-mower, the combination with the ground-wheels and drivingshaft, of wheel guards supported on said shaft and having extensions infront of said wheels, a finger bar connecting said extensions, a cutterbar mounted for reciprocation upon the finger bar, upwardly extendingarms on said extensions, levers pivoted in said arms and at their lowerends pivoted to the cutter bar, a link connecting the upper ends of saidlevers, a pitman connected to said link, a counter-shaft mounted in abearing on one of said wheel guards, and a pair of gear wheelsconnecting said counter-shaft to said driving shaft.

4. In a lawn-mover, the combination with the ground wheels and drivingshaft, of wheel guards arched over said wheels and having forwardly anddownwardly inclined extensions in front of the wheels the inclinedportions being longitudinally slotted,

cutting mechanism supported on the forward ends of said extensions, anda roller having bearings at its ends adjustably supported in the slotsof said extensions.

In testimony whereof I aliix my signature in presence of two witnesses.

JOHN EDMUNDs Witnesses PHILIP CONBEER,

M. B. MAY.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents,

Washington, I). C.

